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    • 6. 发明申请
    • METHOD OF MARINE TIME-LAPSE SEISMIC SURVEYING
    • 海洋时空地震测量方法
    • WO2009109663A3
    • 2010-11-11
    • PCT/EP2009052699
    • 2009-03-09
    • SHELL INT RESEARCHLIGTENDAG MARTINUS HENDRIKUS PETRUSWILLS PETER BERKELEY
    • LIGTENDAG MARTINUS HENDRIKUS PETRUSWILLS PETER BERKELEY
    • G01V1/36G01V1/38
    • G01V1/36G01V1/3808G01V2210/32G01V2210/612
    • A method of marine time-lapse seismic surveying of a subsurface formation, comprises providing a baseline survey, providing a monitor survey that includes information about changes in the subsurface relative to the baseline survey, recording a repeat survey so closely in time to one of either the baseline survey or the monitor survey that changes in the subsurface can be ignored but under different near-surface conditions from said one survey, computing a short-time survey difference between the repeat signals and signals comprising said one of either the baseline survey or the monitor survey, computing a monitor survey difference, matching the short-time survey difference and the monitor survey difference to derive a matched noise survey difference, subtracting the matched noise survey difference from the monitor survey difference, and outputting a noise suppressed survey difference based on the result of the subtraction.
    • 一种地下地层海洋延时地震测量方法,包括提供基准测量,提供监测调查,监测调查包括关于地下相对于基线调查的变化的信息,将时间上的重复调查及时地记录到任何一个 可以忽略地下变化的基线调查或监测调查,但是在所述一个调查的不同近地表条件下,计算重复信号和包括基准测量或基准测量之间的所述信号之间的短时间测量差异 监测调查,计算监测测量差异,匹配短时间测量差异和监测测量差异,得出匹配噪声测量差异,从监测测量差异中减去匹配噪声测量差异,并输出噪声抑制测量差异 减法的结果。
    • 7. 发明申请
    • MARINE TIME-LAPSE SEISMIC SURVEYING
    • 海上时差地震勘测
    • WO03087878A8
    • 2004-11-11
    • PCT/EP0304230
    • 2003-04-16
    • SHELL INT RESEARCHSHELL CANADA LTD
    • CALVERT RODNEY WILLIAMWILLS PETER BERKELEY
    • G01V1/36G01V1/38
    • G01V1/38G01V1/364G01V1/3808G01V2210/56
    • Method of marine time-lapse seismic surveying the subsurface using a seismic source and a seismic receiver (11,12) at a predetermined position, which method comprises positioning the seismic source (13) at position (15); recording for this position (15) for each seismic receiver (11,12) a set of at least two repeat signals at different sea states; recording for each seismic receiver (11,12) a monitor signal assuming a model for the signal that includes the subsurface signal, differences in the subsurface signals due to changes in the subsurface, and the contributions of surface multiple reflections; determining a set of filter functions that enable eliminating the surface multiple reflections; calculating for each receiver (11,12) the estimated differences in the subsurface signals which estimated difference is a measure of changes in the subsurface signal caused by changes in the target layer in the time elapsed between recording the repeat signals and recording the monitor signal.
    • 使用地震源和地震接收器(11,12)在预定位置进行海洋延时地震勘测方法,该方法包括将地震源(13)定位在位置(15); 为每个地震接收器(11,12)记录这个位置(15)一组在不同海况下的至少两个重复信号; 为每个地震接收机(11,12)记录一个监测信号,该信号假定包含地下信号的信号模型,由于地下变化引起的地下信号的差异以及表面多次反射的贡献; 确定能够消除表面多次反射的一组滤波器功能; 对于每个接收机(11,12)计算估计差异的地下信号中的估计差异是由记录重复信号和记录监视信号之间经过的时间中的目标层的变化引起的地下信号变化的度量。